Bug in removing channels from supybot.channels.
Bug in removing channels from supybot.channels.

haxwithaxe/supybot,ProgVal/Limnoria-test,mazaclub/mazabot-core,kblin/supybot-gsoc,ProgVal/Limnoria-test,mazaclub/mazabot-core,buildbot/supybot,jeffmahoney/supybot,Ban3/Limnoria,raboof/supybot,Ban3/Limnoria,prashantpawar/supybot-rothbot,frumiousbandersnatch/supybot-code